Re: [PATCH v4 5/6] KVM: MMU: combine guest pte read between walk and pte prefetch

Xiao Guangrong
2010-07-03T13:01:38Z

Avi Kivity wrote:

>> And this check is not sufficient, since it's only checked if the
>> mapping is zapped or not exist, for other words only when broken this
>> judgment:
>> is_shadow_present_pte(*sptep)&& !is_large_pte(*sptep)
>>
>> but if the middle level is present and it's not the large mapping,
>> this check is skipped.
>>
>
>
> Well, in the description, it looked like everything was using small
> pages (in kvm, level=1 means PTE level, we need to change this one
> day). Please describe again and say exactly when the guest or host uses
> large pages.
>

Avi, sorry for my poor English, i not mean "everything was using small", i don't
know where cause you confused :-(